Improvement in chain-pumps



E. A. VAN SANT.

CHAIN-PUMP.

No.178,208. Pa'enized May 30,1876.

i l 11 l k f Vlg/N ff, yi/M A.- w n, l d d lower flange.

UNITED STATES PATENT EEIcE.

ELIAS A. vAN SANT, oF PEoRrA, ILLINOIS.

IMPUROVEMENT IN CHAIN-PUMPS.

Speciication forming part of Letters Patent No. 178,208, dated May 30, 1876; application filed April 20, 1876.

To allwhom 'it 'may concern:

Beit known that I, ELIAS A. VAN SANT, of Peoria, in the county of Peoria, in the State of Illinois, have invented an Improvement.in Chain-Pumps; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed drawings, making a part of this specification, in `which like letters of reference referto like parts, and in which- Figure l represents an elevation of the bucket as followed by link or links and airvessel; Fig. 2, a vertical ideal section near .the center of the bucket D 5 Fig. 3, a supercial view of the latter, exhibiting the draining-groove.

Thevobjeets of this invention are, rst, to obviate the difficulty commonly met in replacing the worn-out rubber suction-buckets (in chain-pumps) with new rubbers, in doing which, ordinarily, a link of the chain must be opened, at the risk of breaking the chain, and then a greater difficulty is encountered in getting the rubber oill of the neck of the metal holder. I do this by dividing the metal holder (or valve) at said neck, between the anges, and unite the parts separated by means of a socket-coupling and pin-keeper.7 Second, to obviate freezing of water above the bucket, which is done not by notehing the edge of the rubber bucket, but by sink ing a vertical groove in the surface ot' the flange (upper) and the neck, and thence horizontally outward along the surface of the Third, to provide a device for compensating the wear on the edge of said rubber suction-buckets, to save the cost of frequent renewal of the same, which I do by inserting (when the rubber becomes too much worn away at its circumference) between the metal neck, which passes through said bucket and the latter (i. e., in the perforated center of the rubber bucket) a ring or expander,7 which enlarges the diameter ofthe same, and saves the cost of a new rubber. Fourth, to

provide an independent air-bucket, or aerator, easily attachable and changeable `from below the' water-bucket, to any place above the latter, but particularly meant to follow each valve.

In the drawings, which represent the best forni of my invention, A is the lower division of the valve 5 B, the upper one; a p, their respective flanges; b, the dowel of the joint; d, the socket which receives said dowel b; f, the keeper or uniting-pin, passing through the socket d and dowel b, which is secured in place by the rubber ring fm.

The water-drain-u is cut vertically in the surface of the upper ange p, and along the neck d of the part B, and thence horizontally outward along thesurface of the lower flange a, under the rubber bucket D.

E is the independent air-bucket, having a bail, l l, above and below, united to the bucket or valve A B by one or more links, F.

C represents the rubber bucket-expander, which rests upon the lower flange a. It is a ring whose crossesection is a depressed pyramid, its apex directed outward against the inner surface of the perforation. of the bucket D. This ring is only introduced when the circumference of the rubber D is worn away, for the purpose, as said before, to obviate the expense of a new rubber bucket.

The operation of this invention is as follows: The coreA B is coupled together by socket b d 'and pin f, with encircling rubber keeper m, so divided for the easy introductionV 'perforation of said rubber valve D, between the latter and the neck d of the core A B. Water standin g above the bucket D is drained oft by means of the duct n, next to the core.

The independent air-.bucket E lessens the weight of the valve A B D, by being now separated from said water-carrier.

What l claim as my invention isl. The combination ofthe metal cores A B, keeper m, and annulus C, substantially as and for the purposes described. l

2. The combination, with the core or valveholder, andthe rubber valve D, of the annulus C, substantially as and for the purposes described.

8. The drip-groove n, placed in vthe periph-v ery of the upper core B, and continued vertically down to the core A, and outward over In testimony that I claim the foregoing imthe horizontal surface of the latter, substanprovementinehain-pumps I have hereunto set tially as described. my hand'this 11th day of April, A. D. 1876. 4. The combination, with the chain, of a ELIAS A. VANSANT.

pump, F, or the bucket A B C D, the inde- 'Witnessesz pendent air-bucket E, substantially as de- HENRY W. WELLS,

scribed. LJAMES M. MORSE. 

